/*
 * Hivemall: Hive scalable Machine Learning Library
 *
 * Copyright (C) 2015 Makoto YUI
 * Copyright (C) 2013-2015 National Institute of Advanced Industrial Science and Technology (AIST)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package hivemall.utils.hashing;


import java.util.Random;

public final class HashFunctionFactory {

    public static HashFunction[] create(int numFunctions) {
        return create(numFunctions, 31L);
    }

    public static HashFunction[] create(int numFunctions, long seed) {
        final Random rand = new Random(seed);
        final HashFunction[] funcs = new HashFunction[numFunctions];
        for(int i = 0; i < numFunctions; i++) {
            funcs[i] = new MurmurHash3Function(rand.nextInt());
        }
        return funcs;
    }

}
